After unsuccessful and rather harmful experiments with cotton swab, I have also tried the product "Audispray", but consisting only of salt water and has put away reasonably acted only after repeated use over days.
Now I got myself the Otowaxol combo pack with attached ear syringe (from a pharmacy). And at the first application I could the lard and the plug completely and rinse out. The application with the drops and the ear syringe according to package insert dropped slightly and was pleasantly (as opposed to treatment by a doctor or to the stubborn and cold Audispray). But most importantly, I hear again wonderful! :)
I can Otowaxol therefore strongly recommended. To apply, however, an ear syringe rubber is incessantly. Such one can also reasonably priced sale on Amazon now.